Actors portraying US President Barack and his official party join other stand-ins for a dress rehearsal of the swearing-in ceremony at the US Capitol, Washington DC, Jan 13, 2013. The official inauguration and swearing-in is Jan 21, 2013. [Photo/Agencies]

Serpico Elliot (L) and Delandra Rollins, stand-ins for US President Barack Obama and first lady Michelle Obama, take part in the swearing-in at a dress rehearsal for the inauguration at the Capitol in Washington Jan 13, 2013. [Photo/Agencies]